"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : dbcompatibility-whale
Case Name   : 函数orafce.ltrim从左往右删除所有存在于pattern中的字符
Create At   : 2024/1/3
Owner       : @zou_jialiang050
Description :
    1.函数orafce.ltrim从左往右删除所有存在于pattern中的字符
    2.函数orafce.ltrim多参
    3.函数orafce.ltrim无参
    4.函数orafce.ltrim少参
Expect      :
    1.成功
    2.失败
    3.失败
    4.成功
History     :
"""
import os
import unittest
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class Whale(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f"-----{os.path.basename(__file__)} start-----")
        self.constant = Constant()
        self.common = Common()
        self.sh_primy = CommonSH('PrimaryDbUser')
        self.dbname = 'db_whale_75'
    
    def test_function(self):
        text = "---pre1:创建A兼容性数据库;expect:成功---"
        self.logger.info(text)
        pre_cmd1 = f"drop database if exists {self.dbname};" \
            f"create database {self.dbname} dbcompatibility='A';"
        pre_msg1 = self.sh_primy.execut_db_sql(pre_cmd1)
        self.logger.info(pre_msg1)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS, pre_msg1,
                      text + '执行失败')
        text = "---pre2:在A数据库中创建whale插件;expect:成功---"
        self.logger.info(text)
        pre_cmd2 = f"create extension whale;"
        pre_msg2 = self.sh_primy.execut_db_sql(pre_cmd2, dbname=self.dbname)
        self.logger.info(pre_msg2)
        self.assertIn(self.constant.extension_create_success, pre_msg2,
                      text + '执行失败')
        
        text = "---step1:从左往右删除所有存在于pattern中的字符;expect:成功---"
        self.logger.info(text)
        sql_cmd1_1 = f"select orafce.ltrim('abaacIacaab', 'ab');"
        msg1_1 = self.sh_primy.execut_db_sql(sql_cmd1_1, dbname=self.dbname)
        self.logger.info(msg1_1)
        self.common.equal_sql_mdg(msg1_1, 'ltrim', 'cIacaab', '(1 row)',
                                  flag='1')
     
        sql_cmd1_3 = f"select length(orafce.ltrim('       I          ',' '));"
        msg1_3 = self.sh_primy.execut_db_sql(sql_cmd1_3, dbname=self.dbname)
        self.logger.info(msg1_3)
        self.common.equal_sql_mdg(msg1_3, 'length', '11', '(1 row)', flag='1')

        sql_cmd1_4 = f"select length(orafce.ltrim('       I          '));"
        msg1_4 = self.sh_primy.execut_db_sql(sql_cmd1_4, dbname=self.dbname)
        self.logger.info(msg1_4)
        self.common.equal_sql_mdg(msg1_4, 'length', '11', '(1 row)', flag='1')

        text = "---step2:函数orafce.ltrim多参;expect:失败---"
        self.logger.info(text)
        sql_cmd2 = f"select orafce.ltrim('abaacIacaab', 'ab', 'ab');"
        msg2 = self.sh_primy.execut_db_sql(sql_cmd2, dbname=self.dbname)
        self.logger.info(msg2)
        self.assertIn("function orafce.ltrim(unknown, unknown, unknown) does "
                      "not exist", msg2, text + '执行失败')

        text = "---step3:函数orafce.ltrim无参;expect:失败---"
        self.logger.info(text)
        sql_cmd3 = f"select orafce.ltrim();"
        msg3 = self.sh_primy.execut_db_sql(sql_cmd3, dbname=self.dbname)
        self.logger.info(msg3)
        self.assertIn("function orafce.ltrim() does not exist", msg3,
                      text + '执行失败')

        text = "---step4:函数orafce.ltrim少参;expect:失败---"
        self.logger.info(text)
        sql_cmd4 = f"select orafce.ltrim('abaacIacaab');"
        msg4 = self.sh_primy.execut_db_sql(sql_cmd4, dbname=self.dbname)
        self.logger.info(msg4)
        self.common.equal_sql_mdg(msg4, 'ltrim', 'abaacIacaab', '(1 row)',
                                  flag='1')

    def tearDown(self):
        text = '----清理环境----'
        cl_cmd = f"drop database {self.dbname};"
        cl_msg = self.sh_primy.execut_db_sql(cl_cmd)
        self.logger.info(cl_msg)
        self.assertIn(self.constant.DROP_DATABASE_SUCCESS, cl_msg,
                      text + '执行失败')
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
